package com.lwl.netty.webSocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

//TextWebSocketFrame 表示一个文本帧（frame）
public class MyTextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame>{

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务器收到消息 ： " + msg.text());
        ctx.writeAndFlush(new TextWebSocketFrame("服务器时间" + LocalDateTime.now() + " " + msg.text()));
    }
    //当web客户端连接后，就会触发
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerAdded 被调用了" + ctx.channel().id().asLongText());
        System.out.println("handlerAdded 被调用了" + ctx.channel().id().asShortText());
    }
    //
    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved 被调用了" + ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常发生 ： " + cause.getMessage());
        ctx.close();
    }
}
